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Oregon Water Quality
2,518 public water systems serving 4,005,242 people.
Water Systems
2,518
Total Violations
206,659
Violation Rate
98.5%
PFAS Detection
24%
30 of 125 tested
Largest Water Systems
PORTLAND WATER BUREAU
PORTLAND, OR · 666,200 served
TUALATIN VALLEY WATER DISTRICT
BEAVERTON, OR · 224,600 served
SALEM PUBLIC WORKS
SALEM, OR · 199,820 served
EUGENE WATER & ELECTRIC BOARD
EUGENE, OR · 176,000 served
MEDFORD WATER COMMISSION
MEDFORD, OR · 106,068 served
HILLSBORO, CITY OF
HILLSBORO, OR · 92,632 served
BEAVERTON, CITY OF
BEAVERTON, OR · 88,045 served
BEND, CITY OF
BEND, OR · 77,704 served
GRESHAM, CITY OF
GRESHAM, OR · 73,932 served
ROCKWOOD PUD
PORTLAND, OR · 65,443 served
TIGARD, CITY OF
TIGARD, OR · 62,500 served
SPRINGFIELD UTILITY BOARD
SPRINGFIELD, OR · 62,100 served
CORVALLIS, CITY OF
CORVALLIS, OR · 61,468 served
ALBANY, CITY OF
ALBANY, OR · 57,997 served
SUNRISE WATER AUTHORITY
HAPPY VALLEY, OR · 50,003 served
KLAMATH FALLS WATER DEPT
KLAMATH FALLS, OR · 40,475 served
LAKE OSWEGO MUNICIPAL WATER
LAKE OSWEGO, OR · 40,000 served
KEIZER, CITY OF
KEIZER, OR · 38,585 served
REDMOND WATER DEPARTMENT
REDMOND, OR · 37,566 served
GRANTS PASS, CITY OF
GRANTS PASS, OR · 37,138 served
Most Violations
#1 SANTIAM MEADOWS COMMUNITY WS SALEM
1,988 #2 HILAND WC - BEAR CREEK NEWBERG
1,799 #3 GALICE SUBDIVISION WATER CO MERLIN
1,619 #4 HILAND WC - BOULDER CREEK NEWBERG
1,380 #5 TROLLERS COVE WATER ASSN TIDEWATER
1,224 #6 SPORTSMANS PARADISE MOTEL/TC KENO
1,023 #7 LAWSON ACRES WATER ASSOCIATION RIDDLE
960 #8 GOLF MHP SEATTLE
954 #9 SAGINAW PARK WATER SYSTEM EUGENE
934 #10 WEISS ESTATES WATER SYSTEM BANDON
888 #11 LONDON WATER CO-OP COTTAGE GROVE
862 #12 MARSHLAND WATER ASSOCIATION CLATSKANIE
829 #13 PISGAH PUBLIC MARKET EUGENE
796 #14 BREWSTER COMMUNITY HOMEOWNERS SALEM
764 #15 DEER ISLAND HEIGHTS WS ST HELENS
763 Counties in Oregon
Multnomah
57 systems · 854,646 served
· 4,422 violations
Washington
96 systems · 597,244 served
· 7,314 violations
Clackamas
231 systems · 385,530 served
· 18,114 violations
Marion
196 systems · 370,079 served
· 19,281 violations
Lane
237 systems · 327,688 served
· 16,216 violations
Deschutes
138 systems · 204,759 served
· 5,986 violations
Jackson
208 systems · 197,238 served
· 12,362 violations
Linn
167 systems · 125,361 served
· 9,206 violations
Douglas
102 systems · 93,351 served
· 10,608 violations
Yamhill
91 systems · 90,673 served
· 5,862 violations
Benton
48 systems · 72,210 served
· 3,039 violations
Umatilla
76 systems · 71,259 served
· 7,500 violations
Lincoln
52 systems · 61,506 served
· 9,051 violations
Josephine
152 systems · 60,301 served
· 11,657 violations
Klamath
108 systems · 58,638 served
· 8,722 violations
Polk
29 systems · 53,707 served
· 2,619 violations
Coos
47 systems · 51,546 served
· 6,822 violations
Clatsop
31 systems · 41,699 served
· 5,305 violations
Columbia
56 systems · 40,231 served
· 9,494 violations
Tillamook
63 systems · 33,756 served
· 4,704 violations
Hood River
21 systems · 27,740 served
· 1,275 violations
Jefferson
31 systems · 26,851 served
· 1,468 violations
Wasco
44 systems · 25,689 served
· 4,505 violations
Malheur
25 systems · 22,466 served
· 4,518 violations
Union
23 systems · 21,181 served
· 1,293 violations
Curry
37 systems · 18,844 served
· 3,619 violations
Crook
38 systems · 16,670 served
· 1,924 violations
Baker
23 systems · 14,604 served
· 2,306 violations
Morrow
15 systems · 13,645 served
· 2,014 violations
Wallowa
10 systems · 5,391 served
· 1,150 violations
Showing top 30 of 36 counties.